Shade.



R. M. DIXON.

SHADE.

APPLICATION FILED lAY 3.1909A PmenumA June 6,1911.

WITNESSES:

UNITED sTATEs PATENT oEEIoE.

ROBERT M. DIXON, 0F EAST ORANGE, NEWJERSEY, ASSIGNOR T0 THE SAFETY CAR HEATING & LIGHTING COMPANY, A CORPORATION OF`NEW JERSEY. y

SHADE.

`Specicaton of Letters Patent.

Application led May 3, 1909. Serial No. 493,595.

To all whom it may concern.' e

Be it known that I, ROBERT M. DIXON a citizen of the United Sta-tes, residing at East Orange, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Shades, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same. l

This invention relates to light distributing means.

One of the objects thereofI is to provide simple and practical meansfor distributing light from a source in a desired direction.

Another object is to provide means of the above type whereby the light is evenly diffused over the desired area.

Another object is to provide means of the above types of cheap and durableconstruction and efficient action.

Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the application of which will be indicated in the following claims.

In the accompanying drawing, wherein is shown one of various possible embodiments of this invention, Figure 1 is a plan view thereof. Fig. 2 is a side elevation, partially broken away in order to disclose the structure more clearly. Fig. 3 is a sectional view taken substantially on the line X-X of Fig. 2. J

Similar reference characters refer to sim ilar parts throughout the several views of the drawings. As conducive to a clearer understanding of this invention, it may here be noted that in the lighting of cars for which the apparatus hereinafter described is peculiarly adapted, it is highly desirable that the light be economically used. It is also of importance not only that the light be directed downwardly to avoid waste, but that it be evenly distributed throughout the length of the car to avoid crowding beneath the lamps and give the entire interior a bright appearance. On the other hand, the lighting apparatus should be simple and durable, and readily maintained in clean condition, or it will not stand the jarring and vibration and exposure to dirt and cinders incident to railway use.

The above and other advantageous features are attained in constructions of the nature hereinafter described..

- Referring now to Fig. 2 of the accompanying drawing, there is shown a glass shade l the upper portion 2 of which is of obscure glass, that is, of such nature as to impede mantle type, is shown at 5, and is so positioned as to bring its eective center substantially within the plane indica-ted by the line 6 at which the portions 2 and 3 meet. The upper portion of the shade is preferably provided with an inwardly directed flange 7 mounted upon the fixture, and as shown there is provided a lower opening 8 through which the gas may be lighted, although it is to be understood that this invention is not limited to these features of construction. It may here be noted that the term shade is used throughout this description and the following claims in abroad sense to comprehend any device used in connection with a source of light to direct, modify, or otherwise affect the light emitted.

In the use of this embodiment of the invention, the same is mounted about a source of light, preferably as indicated substantially the entire light passing upwardly being downwardly reflected at the inner surface cf the portion 2 of the globe by reason of its semi-opacity. There is, however, just sufficient light permitted to pass as to illuminate the upper portion of the car or other apartment to the small degree desired. All of the light passing directly in a general downward direction from thesource, or indirectly by reiiection from the upper part of the shade, is passed through the portion 3 and evenly diffused about all adjacent portions of the car orV apartment, being substantially undiminished in amount by its passage through this portion of .the shade. The unequal illumination and sharp Patented June e, 1911.

glare of a strong source of light is thus done y away with and the waste of light by its emission in undesired directions is thus avoided. Moreover, the entire device is of simple and cheap construction, is str ong and durable, and is readily cleaned whenever desired or necessary. Also, the appearance of the lamp is not only attractive, but is restful to the eyes.

It will thus be seen that there is provided illustrative apparatus in which the objects of this invention are achieved.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. It is also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter oflanguage, might be said to fall therebetween.

I-Iaving described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A shade for car-lighting apparatus having the general form of a horizontal oblate spheroid with openings at its upper and lower surfaces, the upper portion being opaque relatively to the lower portion and the lower portion being formed in wavy corrugations grouped about the lower openinw.

In combination, a shade for car-lighting apparatus having the general form of a horizontal oblate spheroid with openings at its Lipper and lower surfaces, the upper portion being opaque relatively to the lower portion and the lower portion being formed in wavy corrugat-ions grouped about said lower opening, and a depending gas mantle substantially at the plane in which said portions meet whereby light is substantially concentrated at a point best adapting it to coact with said shade.

In testimony whereof I ailix my signature, in the presence of two witnesses.

ROBERT M. DIXON.

Vitnesses JOHN T. CLARK, ELMER E. ALLBEE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

